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به‌کارگیری روش تحلیل پوششی داده‌ها به منظور کاهش میزان نهادههای مصرفی در تولید ذرت علوفهای در شهرستان شهرکرد | ||
| مهندسی بیوسیستم ایران | ||
| مقاله 2، دوره 51، شماره 2، تیر 1399، صفحه 247-261 اصل مقاله (1.17 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijbse.2020.297972.665278 | ||
| نویسندگان | ||
| حسین رستگار1؛ امین لطفعلیان دهکردی* 1؛ اصغر عابدی1؛ مرتضی تاکی2 | ||
| 1گروه مهندسی مکانیک بیوسیستم، دانشکده کشاورزی، دانشگاه شهرکرد، شهرکرد، ایران | ||
| 2گروه مهندسی ماشینهای کشاورزی و مکانیازسیون-دانشگاه علوم کشاورزی و منابع طبیعی خوزستان-ملاثانی | ||
| چکیده | ||
| تحلیل روند انرژی راه حلی است که به برنامهریزان و سیاستگذاران، اطلاعات مناسبی در جهت بهبود انرژی مصرفی ارائه می‌دهد. این تحقیق به منظور ارزیابی و بررسی انرژی مصرفی و انتشار گازهای گلخانهای در تولید ذرت علوفهای به روش تحلیل پوششی داده‌ها انجام گردید. داده‌های اولیه به روش نمونهگیری تصادفی ساده از 50 مزرعهی تولید ذرت علوفهای در شهرستان شهرکرد جمع‌آوری گردید. میزان کل انرژی ورودی و انرژی خروجی به ترتیب برابر با 77693 و 241281 مگاژول بر هکتار شد که پس از بهینهسازی در میزان مصرفی نهادهها، کاهش 12080 مگاژول بر هکتاری در کل انرژی ورودی به وجود آمد. مقادیر نسبت انرژی و انرژی ویژه به ترتیب برابر با 10/3 و 57/2 مگاژول بر کیلوگرم در حالت واقعی و 67/3 و 17/2 مگاژول بر کیلوگرم در حالت بهبود یافته محاسبه شد. بیشترین انرژی مصرفی در کشت ذرت به نهاده الکتریسیته به مقدار 41205 مگاژول برهکتار (03/53 درصد) اختصاص داشته و پس از بهبود میزان نهادههای مصرفی نیز مجموع انرژی آب و الکتریسیته با سهم 22 درصد، بیشترین پتانسیل کاهش انرژی کل نهادهها را به دنبال داشت. همچنین انتشار گازهای گلخانهای ناشی از مصرف نهادهها در دو حالت واقعی و بهبودیافته به ترتیب برابر با 5/2885 و 5/2554 کیلوگرم معادل دیاکسید کربن بر هکتار محاسبه گردید. | ||
| کلیدواژه‌ها | ||
| الکتریسیته؛ انتشارات گلخانهای؛ ذرت علوفهای؛ نسبت انرژی | ||
| عنوان مقاله [English] | ||
| Application of Data Envelopment Analysis (DEA) In Order to Reduction of Consumption Inputs in Silage Corn production in the Shahrekord County | ||
| نویسندگان [English] | ||
| Hossein Rastegar1؛ Amin Lotfalian Dehkordi1؛ Asghar Abedi1؛ Morteza Taki2 | ||
| 1Department of Mechanical Engineering of Biosystems, Faculty of Agriculture, Shahrekord University, PO Box 115, Shahrekord, 88186-34141, Iran. | ||
| 2Department of agricultural machinery and mechanization- Agricultural Sciences and Natural Resources University of Khuzestan-Mollasani | ||
| چکیده [English] | ||
| Analysis of energy consumption provides useful information for planners and policymakers to improve the efficiency of energy consumption. This study was conducted to evaluate and investigating the the energy flow and greenhouse emissions in silage corn production by data envelopment analysis method. The primary data was collected from 50 farms of silage corn production in the Shahrekord County by simple random sampling. The total amount of inputs energy and output energy was 77693 MJ.ha-1 and 502669 MJ.ha-1, respectively, which after improving in inputs consumption was resulted a reduction of 12080 MJ /ha in total inputs energy. Energy ratio (ER) and energy productivity (EP) were determined as 3.1, 2.57 MJ.kg-1 in actual conditions and 3.67 and 2.17 MJ.kg-1 in optimization conditions, respectively. Electricity was identified as major contributor to total energy consumption as 41205 MJ.ha-1 (53.3%) and also after improving in inputs consumption, the summation of water and electricity had the most contribution on the total energy saving with the share of 22%. Also, the total GHG emission in actual and optimum conditions were calculated as 2885.5 and 2554.5 kgCO2eq. per ha, respectively. | ||
| کلیدواژه‌ها [English] | ||
| Electricity, Greenhouses emissions, Silage corn, Energy ratio | ||
| مراجع | ||
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